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RDX: 0000000000000001 RSI: 0000000020000380 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000792 R14: 00000000006ff650 R15: 0000000000000014
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kernel BUG at fs/btrfs/extent_io.c:4049!
invalid opcode: 0000 [#1] SMP KASAN PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 15471 Comm: syz-executor3 Not tainted 4.17.0-rc4+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:flush_write_bio.isra.37+0x75/0x90 fs/btrfs/extent_io.c:4049
RSP: 0018:ffff880085d0f6d0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff880085d0f718 RCX: ffffffff81fc5c65
RDX: 0000000000040000 RSI: ffffc9000ac8d000 RDI: ffffffff85406570
RBP: ffff880085d0f6e0 R08: ffffed00209846eb R09: 0000000000000001
R10: ffffed00209846ea R11: ffff880104c23753 R12: ffff8800a267db00
R13: 0000000000000000 R14: ffff880085d0f8d8 R15: dffffc0000000000
FS:  00007fe41f11f700(0000) GS:ffff880104c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004daac4 CR3: 0000000092d14003 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 extent_writepages+0xd2/0x110 fs/btrfs/extent_io.c:4125
 btrfs_writepages+0x3e/0x50 fs/btrfs/inode.c:8711
 do_writepages+0xf2/0x290 mm/page-writeback.c:2341
 __filemap_fdatawrite_range+0x251/0x310 mm/filemap.c:445
 filemap_fdatawrite_range+0x2a/0x40 mm/filemap.c:465
 btrfs_fdatawrite_range+0x49/0xe0 fs/btrfs/file.c:3397
 __btrfs_direct_write fs/btrfs/file.c:1829 [inline]
 btrfs_file_write_iter+0x127e/0x1652 fs/btrfs/file.c:1954
 call_write_iter include/linux/fs.h:1784 [inline]
 do_iter_readv_writev+0x3bd/0x5c0 fs/read_write.c:680
 do_iter_write+0x154/0x540 fs/read_write.c:959
 vfs_writev+0x158/0x2d0 fs/read_write.c:1004
 do_writev+0xe1/0x240 fs/read_write.c:1039
 __do_sys_writev fs/read_write.c:1112 [inline]
 __se_sys_writev fs/read_write.c:1109 [inline]
 __x64_sys_writev+0x75/0xb0 fs/read_write.c:1109
 do_syscall_64+0xda/0x560 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455a09
RSP: 002b:00007fe41f11ec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007fe41f11f6d4 RCX: 0000000000455a09
RDX: 0000000000000001 RSI: 0000000020000380 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000792 R14: 00000000006ff650 R15: 0000000000000014
Code: da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 18 48 c7 03 00 00 00 00 e8 e5 fd 63 ff 5b 41 5c 5d c3 e8 db fd 63 ff <0f> 0b 48 89 df e8 71 ae 91 ff eb de 48 89 df e8 c7 ad 91 ff eb 
RIP: flush_write_bio.isra.37+0x75/0x90 fs/btrfs/extent_io.c:4049 RSP: ffff880085d0f6d0
---[ end trace 18d3b7cd5f7a97d7 ]---